Condensing section adjustable heat storage type gravity heat pipe heat pump coupling cold and warm dual supply system

Abstract

The present application belongs to the technical field of geothermal energy utilization and geothermal energy storage, and relates to a condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm dual supply system, which comprises a center gravity heat pipe, the center gravity heat pipe is radially outwardly sequentially sleeved with a first sleeve pipe, a second sleeve pipe and a third sleeve pipe; a first working medium layer is formed between the first sleeve pipe and the center gravity heat pipe, a first circulating water layer is formed between the second sleeve pipe and the first sleeve pipe, and a second working medium layer is formed between the third sleeve pipe and the second sleeve pipe; the length of the third sleeve pipe is shorter than that of the second sleeve pipe, and a region between the bottom end of the second working medium layer and the bottom end of the first circulating water layer forms a shallow ground source region; the center gravity heat pipe is installed with a first valve, the first valve is used for changing the height position of the condensing section in the non-heating season, so that the heat of the center gravity heat pipe can be transmitted to the shallow ground source through the first working medium layer and the first circulating water layer for storage, and the heat stored in the shallow ground source can be extracted in the heating season for peak shaving heating.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of geothermal energy utilization and geothermal energy storage, and particularly relates to a condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm dual supply system. BACKGROUND

[0002] As a clean energy with large reserves and wide distribution, scientific and reasonable development and utilization of geothermal resources and sustainable utilization of geothermal resources have important significance for the development of low-carbon and environmentally friendly economy.

[0003] As an efficient heat transfer element in the field of medium-deep geothermal energy development and utilization, the working medium in the heat pipe absorbs heat and evaporates in the medium-deep high temperature area of the ground source, the high temperature steam moves along the inner wall of the heat pipe to the condensing section to release heat and condense, and the condensed liquid flows into the evaporation section under the action of gravity, and the cycle is repeated to continuously extract the medium-deep ground source heat.

[0004] The traditional gravity heat pipe heating system is generally a single pipe structure, and only faces the heating problem in the heating season, and the heating power is basically constant, and the problem of increased heating power demand in extremely cold weather cannot be solved.

[0005] In addition, in the non-heating season, the traditional heating system is generally in a shutdown state, and the unit cannot be efficiently utilized, and the cooling problem in summer cannot be solved.

[0006] Therefore, it is necessary to provide a condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm dual supply system to be able to peak shaving in winter heating, and solve the problem of increased heating power demand in extremely cold weather. SUMMARY

[0007] The purpose of the present application is to provide a condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm dual supply system, which can solve the problem of winter heating peak shaving.

[0008] To achieve this purpose, the following technical solutions are adopted in the present application:

[0009] A condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm dual supply system, comprising a center gravity heat pipe, the center gravity heat pipe is sequentially sleeved with a first sleeve pipe, a second sleeve pipe and a third sleeve pipe radially outward, and the center gravity heat pipe, the first sleeve pipe, the second sleeve pipe and the third sleeve pipe all extend downward;

[0010] The first sleeve pipe and the center gravity heat pipe form a first working medium layer, the second sleeve pipe and the first sleeve pipe form a first circulating water layer, and the third sleeve pipe and the second sleeve pipe form a second working medium layer; the length of the third sleeve pipe is shorter than that of the second sleeve pipe, and the area between the bottom end of the second working medium layer and the bottom end of the first circulating water layer forms a shallow ground source area;

[0011] The central gravity heat pipe is provided with a first valve for changing the height position of the condensing section in the non-heating season, so that the heat of the central gravity heat pipe can be transferred to the shallow ground source through the first working medium layer and the first circulating water layer, and the heat stored in the shallow ground source can be extracted for peak shaving heating in the heating season.

[0012] Preferably, a heat pump unit and a second heat exchanger are further included, and the heat of the shallow ground source is extracted for peak shaving heating through the heat pump unit, the second heat exchanger and the first circulating water layer.

[0013] Preferably, in the non-heating season, the first working medium layer is filled with a heat-conducting working medium, and the second working medium layer is filled with a heat-insulating working medium; in the heating season, the first working medium layer is filled with a heat-insulating working medium, and the second working medium layer is filled with a heat-conducting working medium.

[0014] Preferably, the third sleeve is provided with a fourth sleeve, the fourth sleeve is shorter than the third sleeve, and a second circulating water layer is formed between the fourth sleeve and the third sleeve; summer cooling is performed through the heat pump unit, the second heat exchanger and the second circulating water layer.

[0015] Preferably, part of the heat of the shallow ground source comes from the heat output for summer cooling.

[0016] Preferably, in the heating season, part of the heat of the central gravity heat pipe is used for heating, and part is used for supplying domestic hot water.

[0017] Preferably, the height of the first valve is flush with the middle position of the first circulating water layer.

[0018] Preferably, a compressor, a second valve, a first heat exchanger and a sixteenth valve are further included, and the central gravity heat pipe is connected with the compressor, the second valve, the first heat exchanger and the sixteenth valve through a circulating steam pipeline, for heating.

[0019] Preferably, a heat pump unit, a sixth valve, a first circulating pump, a fifth valve and a second heat exchanger are further included, and the heat pump unit is connected with the sixth valve, the first circulating pump, the first circulating water layer, the fifth valve and the second heat exchanger through a circulating water pipeline, for peak shaving heating.

[0020] Preferably, the bottom end of the central gravity heat pipe is located at a position of 1.5Km-3Km from the ground source, the bottom end of the first sleeve and the second sleeve is located at a position of 0.3Km-0.5Km from the ground source, the bottom end of the third sleeve is located at a position of 0.2Km-0.3Km from the ground source, and the bottom end of the fourth sleeve is located at a position of 0.05Km-0.2Km from the ground source.

[0021] The condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm double supply system has the advantages that the first valve is adjusted, the central gravity heat pipe absorbs heat in the middle deep layer ground source, releases heat in the shallow layer, and stores heat as the peak shaving heat for winter heating by taking the shallow ground source as the heat storage carrier. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the principle diagram of the condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm double supply system of the embodiment of the present application;

[0023] Figure 2 is the side view of the condensing section adjustable gravity heat pipe assembly of the embodiment of the present application;

[0024] Figure 3 is the top view of the condensing section adjustable gravity heat pipe assembly of the embodiment of the present application.

[0025] The component names and labels in the drawings are as follows:

[0026] The central gravity heat pipe 1, the first working medium layer 2, the first sleeve pipe 3, the first circulating water layer 4, the second sleeve pipe 5, the second working medium layer 6, the third sleeve pipe 7, the second circulating water layer 8, the fourth sleeve pipe 9, the first valve 10, the first heat exchanger 11, the second valve 12, the third valve 13, the compressor 14, the fourth valve 15, the fifth valve 16, the sixth valve 17, the first circulating pump 18, the seventh valve 19, the second circulating pump 20, the eighth valve 21, the ninth valve 22, the tenth valve 23, the eleventh valve 24, the twelfth valve 25, the thirteenth valve 26, the fourteenth valve 27, the third circulating pump 28, the fifteenth valve 29, the heat insulation working medium storage tank 30, the heat conduction working medium storage tank 31, the second heat exchanger 32, the heat pump unit 33, the hot water storage tank 34, the third heat exchanger 35, the sixteenth valve 36, and the seventeenth valve 37. DETAILED DESCRIPTION

[0027] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0028] As Figures 1-3As shown, the embodiment discloses a condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm dual supply system. The condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and warm dual supply system comprises a central gravity heat pipe 1, the central gravity heat pipe 1 extends vertically, and the central gravity heat pipe 1 is sleeved with at least two coaxial unequal length sleeve pipes. Specifically, the central gravity heat pipe 1 is sleeved with four coaxial unequal length sleeve pipes, which are a first sleeve pipe 3, a second sleeve pipe 5, a third sleeve pipe 7 and a fourth sleeve pipe 9 radially outward.

[0029] A first working medium layer 2 is formed between the first sleeve pipe 3 and the central gravity heat pipe 1, and the thickness of the first working medium layer 2 is 9mm-50mm. A first circulating water layer 4 is formed between the second sleeve pipe 5 and the first sleeve pipe 3. A second working medium layer 6 is formed between the third sleeve pipe 7 and the second sleeve pipe 5, and the thickness of the second working medium layer 6 is 9mm-50mm. A second circulating water layer 8 is formed between the fourth sleeve pipe 9 and the third sleeve pipe 7.

[0030] The first sleeve pipe 3 and the second sleeve pipe 5 are approximately equal in length, and the length of the first sleeve pipe 3 and the second sleeve pipe 5 is shorter than that of the central gravity heat pipe 1. The length of the third sleeve pipe 7 is shorter than that of the second sleeve pipe 5. The length of the fourth sleeve pipe 9 is shorter than that of the third sleeve pipe 7.

[0031] As a preferred solution, the bottom end of the central gravity heat pipe 1 is located at a position of 1.5Km-3Km in the deep layer of the ground source, the bottom end of the first sleeve pipe 3 and the second sleeve pipe 5 is located at a position of 0.3Km-0.5Km in the shallow layer of the ground source, the bottom end of the third sleeve pipe 7 is located at a position of 0.2Km-0.3Km in the shallow layer of the ground source, and the bottom end of the fourth sleeve pipe 9 is located at a position of 0.05Km-0.2Km in the shallow layer of the ground source. For example, the bottom end of the central gravity heat pipe 1 is located at about 3000m underground, and the bottom end of the first sleeve pipe 3 and the second sleeve pipe 5 is located at about 500m underground. The bottom end of the third sleeve pipe 7 is located at about 200m underground. The bottom end of the fourth sleeve pipe 9 is located at about 100m underground.

[0032] The first valve 10 is coaxially installed on the central gravity heat pipe 1, and the first valve 10 is located near the first circulating water layer 4, so that the heat of the central gravity heat pipe 1 can be transferred to the shallow layer of the ground source through the first circulating water layer 4 in the non-heating season. The area between the bottom end of the second working medium layer 6 and the bottom end of the first circulating water layer 4 forms a shallow layer of the ground source, specifically, the shallow layer of the ground source of the embodiment is Figure 1 a region of -200m to -500m in the shallow layer. The height position of the condensing section is adjusted by the opening and closing of the first valve 10. Specifically, the first valve 10 and the bottom end of the third sleeve pipe 7 can be on the same horizontal line.

[0033] As Figure 1As shown, the central gravity heat pipe 1 is connected with the compressor 14, the second valve 12, the first heat exchanger 11 and the sixteenth valve 36 through a circulating steam pipeline to form a heating unit. The circulating steam pipeline is made of galvanized steel pipe and is covered with a polyurethane foam insulation layer. The central gravity heat pipe 1 is a carbon steel-water heat pipe which is low in price and superior in performance and has been widely used in chemical, oil refining, steel and ceramic industries. The central gravity heat pipe 1 is connected with the circulating steam pipeline by argon arc welding. The compressor 14 is a Roots steam compressor which has good corrosion resistance in high-temperature and high-humidity environments. The first heat exchanger 11 is a stainless steel plate heat exchanger. The second valve 12 and the sixteenth valve 36 are both ball valves. The compressor 14, the second valve 12, the first heat exchanger 11 and the sixteenth valve 36 are all connected with the pipeline by flanges.

[0034] The central gravity heat pipe 1 is connected with the compressor 14, the third valve 13, the third heat exchanger 35 and the seventeenth valve 37 through a circulating steam pipeline, and the third heat exchanger 35 is connected with the hot water storage tank 34 through a hot water pipeline to form a domestic hot water unit. The third heat exchanger 35 is a finned tube heat exchanger, the hot water pipeline is made of stainless steel pipe, and the third valve 13 and the seventeenth valve 37 are both ball valves. The compressor 14, the third valve 13, the third heat exchanger 35 and the seventeenth valve 37 are connected with the circulating steam pipeline by flanges, and the third heat exchanger 35 and the hot water storage tank 34 are connected with the hot water pipeline by flanges.

[0035] The heat pump unit 33 is connected with the sixth valve 17, the first circulating pump 18, the first circulating water layer 4, the fifth valve 16 and the second heat exchanger 32 through a circulating water pipeline to form a peak-shaving heating unit. The fifth valve 16 and the sixth valve 17 are both ball valves, the second heat exchanger 32 is a finned tube heat exchanger, and the circulating water pipeline is made of stainless steel pipe. The heat pump unit 33, the sixth valve 17, the first circulating pump 18, the fifth valve 16 and the second heat exchanger 32 are all connected with the circulating water pipeline by flanges.

[0036] The heat pump unit 33 is connected with the seventh valve 19, the second circulating pump 20, the second circulating water layer 8, the fourth valve 15 and the second heat exchanger 32 through a circulating water pipeline to form a cooling unit. The seventh valve 19 and the fourth valve 15 are both ball valves. The heat pump unit 33, the seventh valve 19, the second circulating pump 20, the fourth valve 15 and the second heat exchanger 32 are all connected with the circulating water pipeline by flanges.

[0037] The heat transfer medium storage tank 31 is connected to the thirteenth valve 26, the ninth valve 22, the first working medium layer 2, the eleventh valve 24, the third circulation pump 28, and the fourteenth valve 27 via heat transfer medium pipelines, forming the first heat transfer medium layer unit. The heat transfer medium storage tank 31 and the heat transfer medium pipelines are all made of stainless steel. The thirteenth valve 26, the ninth valve 22, and the fourteenth valve 27 are all ball valves. The heat transfer medium storage tank 31, the thirteenth valve 26, the ninth valve 22, the eleventh valve 24, the third circulation pump 28, and the fourteenth valve 27 are all connected to the heat transfer medium pipelines via flanges. The heat transfer medium inside the heat transfer medium storage tank 31 is water.

[0038] The heat transfer medium storage tank 31 is connected to the thirteenth valve 26, the eighth valve 21, the second working medium layer 6, the twelfth valve 25, the third circulation pump 28, and the fourteenth valve 27 via heat transfer medium pipelines, forming the second heat transfer medium layer unit. The eighth valve 21 and the twelfth valve 25 are both ball valves. The heat transfer medium storage tank 31, the thirteenth valve 26, the eighth valve 21, the twelfth valve 25, the third circulation pump 28, and the fourteenth valve 27 are all connected to the heat transfer medium pipelines via flanges.

[0039] The insulating working fluid storage tank 30 is connected to the fifteenth valve 29, the ninth valve 22, the first working fluid layer 2, the eleventh valve 24, and the tenth valve 23 via insulating working fluid pipelines, forming the first insulating working fluid layer unit. The insulating working fluid storage tank 30 is made of stainless steel. The insulating working fluid storage tank 30, the fifteenth valve 29, the ninth valve 22, the eleventh valve 24, and the tenth valve 23 are all connected to the heat-conducting working fluid pipelines via flanges. The insulating working fluid inside the insulating working fluid storage tank 30 is dry air or argon gas.

[0040] The insulating working fluid storage tank 30 is connected to the fifteenth valve 29, the eighth valve 21, the second working fluid layer 6, the twelfth valve 25, and the tenth valve 23 via insulating working fluid pipelines, forming the second insulating working fluid layer unit. The insulating working fluid storage tank 30, the fifteenth valve 29, the eighth valve 21, the twelfth valve 25, and the tenth valve 23 are all connected to the heat-conducting working fluid pipelines by flanges.

[0041] Heat storage conditions during non-heating season:

[0042] In this embodiment, the first circulating water layer 4 is used for peak shaving during the heating season. Closing the first valve 10 adjusts the height of the condensing section to be near the first circulating water layer 4. The working fluid in the central gravity heat pipe 1 absorbs heat and evaporates in the deep geothermal layer. The steam rises to the vicinity of the source near the first valve 10, releases heat, and condenses. The heat is transferred to the first circulating water layer 4 through the thermal conductivity of the first working fluid layer 2, and then transferred to the shallow geothermal source through the first circulating water layer 4. This process enables the storage of deep geothermal heat in the shallow geothermal source during the non-heating season.

[0043] The heat of the first circulating water layer 4 is prevented from being transferred to the second circulating water layer 8 by the heat insulation effect of the second working medium layer 6, so as to prevent the influence on the summer cooling.

[0044] The shallow ground source region of the embodiment is in the region from the shallow layer to the middle layer, and the distance between the shallow layer and the bottom end of the second circulating water layer 8 is 100 m, so as to prevent the heat stored in the shallow ground source from flowing to the upper ground source.

[0045] Specifically, the thirteenth valve 26 and the ninth valve 22 are opened, and the remaining valves, the water pump and the heat pump unit are in the closed state. The heat-conducting working medium in the heat-conducting working medium storage tank 31 is filled into the first working medium layer 2 by gravity. When the filling liquid level is flush with the installation position of the first valve, the thirteenth valve 26 and the ninth valve 22 are closed. On the basis of the above steps, the fifteenth valve 29 and the eighth valve 21 are opened. After the high-pressure working medium in the heat insulation working medium storage tank 30 fills the second working medium layer 6, the eighth valve 21 and the fifteenth valve 29 are closed. At this time, the first working medium layer 2 plays a heat-conducting role, and the second working medium layer 6 plays a heat-insulating role.

[0046] Summer cooling condition: the fourth valve 15, the second circulating pump 20, the seventh valve 19 and the heat pump unit 33 are opened, and the remaining valves and circulating pumps are in the closed state. The working medium in the heat pump unit 33 is evaporated and condensed to absorb the heat of the user side and is conducted to the shallow ground source through the second circulating water layer 8 to be released, so as to realize summer cooling.

[0047] Winter heating / hot water supply condition:

[0048] The eleventh valve 24 and the third circulating pump 28 are opened, and the remaining valves, circulating pumps and heat pump units are in the closed state. After the heat-conducting working medium filled in the first working medium layer 2 is completely pumped back to the heat-conducting working medium storage tank 31 by the third circulating pump 28 in the non-heating season, the eleventh valve 24, the third circulating pump 28 and the fourteenth valve 27 are closed. On the basis of completing the above steps, the fifteenth valve 29 and the ninth valve 22 are opened. After the high-pressure working medium in the heat insulation working medium storage tank 30 fills the first working medium layer 2, the fifteenth valve 29 and the ninth valve 22 are closed. That is, the heat-conducting working medium in the first working medium layer 2 is replaced by the heat insulation working medium in the non-heating season, and the heat-conducting role is replaced by the heat insulation role, so as to prevent the heat of the central gravity heat pipe 1 from spreading underground.

[0049] On the basis of the above steps, the tenth valve 23 and the twelfth valve 25 are opened, and after the heat insulation working medium in the second working medium layer 6 is completely discharged to the atmosphere, the tenth valve 23 and the twelfth valve 25 are closed. On the basis of the above steps, the thirteenth valve 26 and the eighth valve 21 are opened, and after the working medium in the heat conducting working medium storage tank 31 fills the second working medium layer 6, the thirteenth valve 26 and the eighth valve 21 are closed. That is, relative to the heat storage working condition in the non-heating season, the second working medium layer 6 is changed from heat insulation to heat conduction, which is beneficial to the heat transfer from the shallow ground source to the first circulating water layer 4 and the heat transfer from the shallow ground source to the first circulating water layer 4 in the summer cooling.

[0050] On the basis of the above steps, the first valve 10, the compressor 14, the second valve 12 and the sixteenth valve 36 are opened, the working medium in the central gravity heat pipe 1 is evaporated by absorbing heat in the deep ground, the steam rises to the top of the central gravity heat pipe 1, is pressurized by the compressor 14 and enters the first heat exchanger 11, the steam is condensed to release heat for the user side heating, and the condensed liquid returns to the heat pipe.

[0051] In the time period when the user side demand for heating is small, the third valve 13 and the seventeenth valve 37 are opened, and the opening degree of the third valve 13 and the seventeenth valve 37 is adjusted, so that part of the steam enters the third heat exchanger 35 and heats the domestic hot water, and the hot water is stored in the hot water storage tank 34 after being heated.

[0052] When the heating demand increases in the extremely cold weather conditions in winter, on the basis of the above steps, the sixth valve 17, the first circulating pump 18, the fifth valve 16 and the heat pump unit 33 are opened, and the heat of the shallow ground source is used to provide peak shaving heating for the user after the heat energy quality is improved by the first circulating water layer 4 and the heat pump unit. That is, the heat stored in the shallow ground source through the first circulating water layer 4 in the non-heating season is used for winter heating peak shaving, so as to solve the problem of increased heating power demand in extremely cold weather.

[0053] In this embodiment, the user side is cooled in the summer, and the first valve 10 is adjusted, so that the central gravity heat pipe 1 absorbs heat in the medium-deep ground source, releases heat in the shallow layer, and stores heat as a winter heating peak shaving heat source by taking the shallow ground source as a heat storage carrier.

[0054] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A condensing section adjustable heat storage type gravity heat pipe heat pump coupled cold and heat double supply system, characterized in that, The center gravity heat pipe is radially outwardly sequentially sleeved with a first sleeve pipe, a second sleeve pipe, a third sleeve pipe, a heat pump unit and a second heat exchanger; The center gravity heat pipe, the first sleeve pipe, the second sleeve pipe and the third sleeve pipe all extend downwardly; The first sleeve pipe and the center gravity heat pipe form a first working medium layer, the second sleeve pipe and the first sleeve pipe form a first circulating water layer, and the third sleeve pipe and the second sleeve pipe form a second working medium layer; The length of the third sleeve pipe is shorter than that of the second sleeve pipe, and a region between the bottom end of the second working medium layer and the bottom end of the first circulating water layer forms a shallow ground source region; The center gravity heat pipe is provided with a first valve, which is used for changing the height position of the condensing section in the non-heating season, so that the heat of the center gravity heat pipe can be transferred to the shallow ground source through the first working medium layer and the first circulating water layer for storage, and the heat stored in the shallow ground source can be extracted in the heating season for peak shaving heating; The third sleeve pipe is sleeved with a fourth sleeve pipe, the fourth sleeve pipe is shorter than the third sleeve pipe, and the fourth sleeve pipe and the third sleeve pipe form a second circulating water layer; summer cooling is performed through the heat pump unit, the second heat exchanger and the second circulating water layer; In the non-heating season, the first working medium layer is filled with a heat-conducting working medium, and the second working medium layer is filled with a heat-insulating working medium; in the heating season, the first working medium layer is filled with a heat-insulating working medium, and the second working medium layer is filled with a heat-conducting working medium; In the heating season, the heat of the center gravity heat pipe is partially used for heating and partially used for supplying domestic hot water; Part of the heat of the shallow ground source comes from the heat output in summer cooling; the bottom end of the center gravity heat pipe is located at a position of 1.5Km-3Km of the ground source, the bottom ends of the first sleeve pipe and the second sleeve pipe are located at positions of 0.3Km-0.5Km of the ground source, the bottom end of the third sleeve pipe is located at a position of 0.2Km-0.3Km of the ground source, and the bottom end of the fourth sleeve pipe is located at a position of 0.05Km-0.2Km of the ground source.

2. The condenser-section-adjustable heat-pipe heat pump coupled heating and cooling dual supply system according to claim 1, characterized in that: The height of the first valve is flush with the middle position of the first circulating water layer.

3. The condenser-section-adjustable heat-pipe heat pump thermocouple cooling and heating dual supply system according to claim 1, characterized in that: Further comprising a compressor, a second valve, a first heat exchanger and a sixteenth valve, the center gravity heat pipe is connected with the compressor, the second valve, the first heat exchanger and the sixteenth valve through a circulating steam pipeline, so as to be used for heating.

4. The condenser-section-adjustable heat-pipe thermal energy storage gravity heat pipe heat pump coupled heating and cooling dual supply system of claim 1, wherein: Further comprising a heat pump unit, a sixth valve, a first circulating pump, a fifth valve and a second heat exchanger, the heat pump unit is connected with the sixth valve, the first circulating pump, the first circulating water layer, the fifth valve and the second heat exchanger through a circulating water pipeline, so as to be used for peak shaving heating.

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